The positive solutions of the equation ex + fy = g  always lie in which quadrant?
 
                Answer: 
            
        First quadrant
- The solution of the pair of equations can be positive when x and y both are positive. This means, x>0 and y>0.
- We know that a point (x, y) has both x and y greater than zero, it lies in the first quadrant. Hence, we can say that the positive solutions of the equation ex + fy = g  always lie in first quadrant as shown below.
 Global
 Global 
        